Description: This is part 2 of the season finale.
Locke searches for Desmond to achieve his goal of destroying the island. Jack, the newly-appointed "protector" of the island, sets out to stop him. In Los Angeles, the survivors slowly reunite and recall their island experiences.
Source: IMDB.com

Description: Locke searches for Desmond to achieve his goal of destroying the island. Jack, the newly-appointed "protector" of the island, sets out to stop him. In Los Angeles, the survivors slowly reunite and recall their island experiences.
Source: IMDB.com

Description: Jacob appears to the survivors of the submarine explosion and tells them what they were chosen for, while Ben joins forces with Locke as they both have a final showdown with Charles Widmore.
Source: IMDB.com

Description: The story of how Jacob and his brother came to the island, their uneasy relationship with their "mother," their eventual falling-out, and revelation of what Jacob was on the island to protect.
Source: IMDB.com

Description: With Jack's help, Locke rescues the candidates from Widmore's compound, but their plans for leaving the island are forced to change. In Los Angeles, Jack tries to convince Locke to try an experimental surgery for his paralysis.
Source: IMDB.com

Description: As alliances are forged and broken as the Locke and Jack camps merge. Widmore delivers his ultimatum. Meanwhile, Jack makes a decision, Jim and Sun are reunited, and in another life, the candidates draw ever closer together.

Description: The mysteries behind Richard Alpert's arrival to the island, his immortality, and his alliance with Jacob are revealed--plus more details about the purpose of the island and the relationship between Jacob and the smoke monster.
Source: IMDB.com

Description: Locke sends Sawyer on a recon mission to the other island, where he runs into Charles Widmore and his submarine crew. In Los Angeles, Sawyer works as a police officer obsessed with finding the conman who destroyed his family.
Source: IMDB.com

Description: Ilana prepares to kill Ben after Miles reveals that Ben killed Jacob. In Los Angeles, Ben contemplates a power play at his high school. Meanwhile Richard and Jack share their secrets and experiences with Jacob and form an alliance.

Description: Claire arrives at the temple and warns the inhabitants that the being inhabiting Locke wants to talk, but Dogen sends Sayid to kill him instead. In Los Angeles, Sayid saves his brother, who is in trouble with a loan shark.
Source: IMDB.com

Description: Jacob sends Hurley on a mission across the island, but Jack must accompany him. In Los Angeles, Jack's difficult relationship with his son is revealed. Meanwhile, Jin discovers that Claire thinks the people at the temple stole her son.
Source: IMDB.com

Description: On the island, the being now occupying Locke's body turns to Sawyer and promises to tell him why he's on the island. Back in Los Angeles, Locke loses his job and encounters a number of familiar faces.

Description: Sayid miraculously comes back to life, but his problems have only just begun. Sawyer escapes, and Kate and Jin go after him. Back in Los Angeles, fugitive Kate helps Claire as she goes into labor.
Source: IMDB.com

Description: Flight 815 is shown successfully landing in Los Angeles with no crash on the island, but the survivors are simultaneously shown still on the island after Juliet detonates the bomb.
Source: IMDB.com

Description: Flight 815 is shown successfully landing in Los Angeles with no crash on the island, but the survivors are simultaneously shown still on the island after Juliet detonates the bomb.
Source: IMDB.com

Description: Jack and Sayid's plan faces resistance from Sawyer, Juliet, and Kate. Ben and The Others/Hostiles reach Jacob at the Foot of the Statue, and are soon met by the 316 survivors, who reveal the contents of their mysterious package.
Source: IMDB.com

Description: Jack attempts to follow through with Daniel Faraday's plan to detonate the hydrogen bomb after Faraday is killed, Locke instructs Alpert to take him to Jacob, and Sawyer is interrogated about an incriminating surveillance video.
Source: IMDB.com

Description: Miles is chosen by Horace to transport a dead body across the island. During the trip, Miles reveals to Hurley that Dr. Pierre Chang (a.k.a. Dr. Marvin Candle) is his father, whom he resents for leaving him and his mother.

Description: Ben and Locke return to the island, where Ben says he is going to summon the Smoke "monster" and atone for his daughter's death. In addition, the falling-out on the island between Ben and Charles Widmore is revealed.
Source: IMDB.com

Description: Jack refuses to help save young Ben after Sayid shoots him, so Sawyer and Kate turn to Richard Alpert for help. Meanwhile, what Sawyer said to Kate on the chopper is revealed, as well as what Kate did with Aaron before the flight.
Source: IMDB.com

Description: Sayid is held as a prisoner by the Dharma Initiative, presumed to be a Hostile. However, during his capture, he believes he has discovered the reason why he's back on the island.
Source: IMDB.com

Description: Jack, Kate and Hurley wind up on the island in 1977, where they meet up with Sawyer and also join the Dharma Initiative. Meanwhile, Sun is stuck on the island in the present with Ben and the other passengers after the plane crash.
Source: IMDB.com

Description: The survivors left on the island, now led by Sawyer after Locke's departure, find themselves back in the 1970s, where they are now forced to become members of the Dharma Initiative.
Source: IMDB.com

Description: John Locke, now alive again and back on the island after the second plane crash, flashes back to his return to civilization, where he is brought in by Charles Widmore and asked to convince the Oceanic 6 to return to the island.
Source: IMDB.com

Description: In order to avoid being killed, Ben promises to offer proof to Sun that Jin is still alive. On the island, Jin meets up with the survivors as Locke reaches The Orchid and fulfills his mission.
Source: IMDB.com

Description: Desmond returns to Oxford to fulfill Faraday's request to find his mother. Back on the island, the survivors discover that they've run into The Others 50 years in the past, but Richard Alpert is the same age.

Description: While Ben and Jack try to round the Oceanic 6 up, Sayid and Hurley are on the run from the law. Meanwhile, back on the island, the survivors, still skipping through time, come under attack.
Source: IMDB.com

Description: As a result of Ben moving the island, the survivors left on the island begin skipping through time. Meanwhile, three years later in Los Angeles, Ben starts convincing the Oceanic 6 to return to the island.
Source: IMDB.com